Tektronix TDS5032, Руководство пользователя

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Measurement Algorithms
Inrush setup
To set up the equipment for Inrush test, follow these steps:
1. Use the dongle on the Inrush section of the test fixture to connect it to the
host system.
2. Connect the current probe between the V
BUS
loop wire on the Inrush section
on the Test fixture and Ch1 of the oscilloscope.
3. Select the measurement and select the command button to run the
application.
4. Connect the unit under test to the A Receptacle of the Inrush section of the
test fixture and observe the Inrush current signal.
5. Select OK after acquiring a waveform. Verify that it is a correct waveform.
Note: To avoid the triggering of Inrush signals and false inrush current by the
discharge switch, place the inrush discharge switch in the ON position and hot-
plug the unit under test (device). If a valid Inrush signal is not acquired, use the
cursor mode in File> Preferences or setup the oscilloscope to get a valid
waveform.
TDSUSB2 Universal Serial Bus Measurement Package 215